<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="news.dao.impl.*" %>
<%@ page import="org.news.dao.*" %>
<%@ page import="news.entity.*" %>
 
<!DOCTYPE html>
<html>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<title>新闻发布系统管理后台</title>
<link href="css/admin.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
    var xmlHttpRequest;
	function onb(t){
	if(t.value=="")
	return false;
	//1、创建XMLHttpRequest对象
	xmlHttpRequest = new XMLHttpRequest();
	//2、设置回调函数
	xmlHttpRequest.onreadystatechange = callBack;
	//3、初始化xmlHttpRequest组件
	var url = "RoleServlet?name="+t.value;
	xmlHttpRequest.open("GET",url,true);
	//4、发送请求
	xmlHttpRequest.send(null);
	
	}
	//回调函数
	function callBack(){
		if(xmlHttpRequest.readyState == 4 &&xmlHttpRequest.status==200){
			var data = xmlHttpRequest.responseText;
			if(data=="true"){
				alert("此分类名称名已被使用！");
			//	$("#nameDiv").html("用户名已被使用！");
			}else{
				//$("#nameDiv").html("用户名可以使用！");
				alert("此分类名称可以使用！");
			}
		}	
	}
	</script>
<div id="header">
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  <div id="nav">
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  </div>
</div>
<div id="admin_bar">
  <div id="status">管理员： admin 登录  &#160;&#160;&#160;&#160; <a href="../util/do_logout.jsp">login out</a></div>
  <div id="channel"> </div>
</div>
</head>
<body>

<div id="main">
  <div id="opt_list">
  <ul>
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    <li><a href="ShowServlet">编辑主题</a></li>
  </ul>
</div>

  <div id="opt_area">
    <h1 id="opt_type"> 添加主题： </h1>
    <form action="NewsAddTopic" method="post">
     
      <p>
        <label> 主题 </label>
        <input name="ntopic" id="ntopic" type="text" class="opt_input" onblur="onb(this)" />
      </p>
     
      <input type="submit" value="提交" class="opt_sub" />
      <input type="reset" value="重置" class="opt_sub" />
    </form>
    <hr />
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  </div>
</div>
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</div>
</body>
</html>
